Hi all,
The --import flag if used during install is for importing of the original run domains to the new installation.
Problem that I found is that the configuration files are all converted to the new V18 form in the original folders of the old installation.
This means that one will have quite a problem if deciding to revert back to the old installation of UEMS.

I strongly recommend using a manual copy over of the original run domains to the new installation and then performing
"ems_domain --localize --refresh --defres" for each domain. This way the original setup is not touched.